Harry R Sheppard

US Patent:

47055782, Nov 10, 1987

Filed:

Apr 16, 1986

Appl. No.:

6/852876

Inventors:

Kou C. Lin - Hermitage PA
Charles E. Burkhardt - Garden City SC
Harry R. Sheppard - Hermitage PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

C21D 104

US Classification:

148108

Abstract:

A method of constructing a magnetic core from groups of amorphous metal laminations, with the groups being defined by flattening sheets which are interspersed in a stack of amorphous laminations during a magnetic stress-relief anneal cycle. The stack of laminations is compressed with a pressure of at least about 4 psi, but not enough pressure to metallurgically bond adjacent laminations. The compression step is applied to the stack of laminations at least during the time the stack is at the elevated soaking temperature of the stress-relief anneal cycle. The flattened laminations are used to construct a magnetic core having an improved space factor and reduced sensitivity to core clamping pressures.

US Patent:

48904783, Jan 2, 1990

Filed:

Sep 11, 1987

Appl. No.:

7/095745

Inventors:

C. Clair Claiborne - Sharpsville PA
Robert A. Kurz - Hermitage PA
Henry A. Pearce - Stoneboro PA
Harry R. Sheppard - Hermitage PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01N 122

US Classification:

73 19

Abstract:

An on-line gas-in-oil monitoring apparatus and method extracts certain reducing or combustible gases from oil and detects their presence and concentration substantially simultaneously using a sensor. The sensors are sintered metal oxide semi-conductors with adsorbed oxygen. The presence of a reducing or combustible gas proportionally increases the conductivity of the semi-conductor. Any resultant change in conductivity indicates the presence and concentraton of the reducing or combustible gas in the semi-conductor. After the analytical cycle the sensors are regenerated by exposure to oxygen.